Answer:
(a) You can tell that have the same strength because they have attracted the same amount of paper clips.
(b) Iron is used in electromagnets because steel retained magnetic properties after the power was turned off, but in the iron, the paper clips dropped off right away.
Explanation:
so sorry
don't know but please mark me as brainliest please
The answer to your question is 5:7
It can be described as a constant variation
